qcacld-3.0: Enable blacklist manager on qca6390

Enable blacklist manager on qca6390 to handle rssi assoc rej
in the assoc rsp.

Change-Id: I7fcfaa2054790259651062480a7995bf0f6c9922
CRs-Fixed: 2569318

configs/qca6390_defconfig

@@ -646,6 +646,7 @@ CONFIG_REG_CLIENT := y
 CONFIG_WLAN_PMO_ENABLE := y
 CONFIG_CONVERGED_P2P_ENABLE := y
 CONFIG_WLAN_POLICY_MGR_ENABLE := y
+CONFIG_FEATURE_BLACKLIST_MGR := y
 CONFIG_SUPPORT_11AX := y
 CONFIG_HDD_INIT_WITH_RTNL_LOCK := y
 CONFIG_WLAN_CONV_SPECTRAL_ENABLE := y